flamingo is a system boiler so your cylinder will be controlling how hot your water gets, your boiler will just come on and off until that temp is achieved.
on the cylinder there will be a cylinder stat which generally 1/3 of way from bottom and set around 60 deg
if you still want a manual for future use go to
www.partsarena.com select potterton/boiler/then model
iain
June 2008